That seaman’s eyesight was excellent, for the torpedo was still far enough away so that Dave had time to order a sharp swerve to port, and to send a quick signal to the engine room. As the craft turned she fairly jumped forward. The “Logan” was now facing the torpedo’s course, and seemed a bare shade out of its path, but the watchers held their breath during those fractions of a second.

Then it went by, clearing the destroyer amidships by barely two feet. Nothing but the swiftness of Darrin’s orders and the marvelously quick responses from helmsman and engineer had saved the destroyer from being hit.

On Dave’s lips hovered the order to dash forward over the course by which the torpedo had come, which is the usual procedure of destroyer commanders when attacking a submarine.

Instead, as the idea flashed into his head, he ordered the ship stopped.

Danny Grin had come out of his “forty winks” at the hail of the bow watch. Now Dave spoke to him hurriedly. Dalzell fairly leaped down from the bridge, hurrying amidships.

“All hands stand by to abandon ship!” rang the voice of Ensign Tupper, taking his order from Darrin. The alarm to abandon ship was sounded all through the ship.

There was a gasp of consternation, but Dalzell had already met and spoken to three of the junior officers, and these quickly carried the needed word.

The light was yet too faint, and would be for a few minutes, to find such a tantalizingly tiny object as a submarine’s periscope at a distance even of a few hundred yards. Lieutenant-Commander Darrin, therefore, had hit upon a simple trick that he hoped would prove effective. All depended upon the speed with which his ruse could be carried out. Cold perspiration stood out over Darrin as he realized the chances he was taking.

“Bow watch, there! Keep sharp lookout for torpedoes! Half a second might save us!”

Tupper stood with hand on the engine-room telegraph. He already had warned the engineer officer in charge to stand by for quick work.